Sage Publications, 1999
Buku Teks
Sheridan, Charles L.
Wiley , 1992
Buku Teks
Taylor, Shelley E., author
McGraw-Hill, 1995
Buku Teks
James K Luiselli, editor
Springer, 2016
Buku Teks
Edited by S. Maes, H. Leventhal and M. Johnston
John Wiley & Sons, 1993
Buku Teks